1. Set constraints: results, applications and future directions;Aiken,1994
2. The complexity of set constraints;Aiken,1993
3. Unification in commutative theories, Hilbert's Basis Theorem, and Gröbner bases;Baader;J. Assoc. Comput. Mach.,1993
4. Unification in the union of disjoint equational theories: combining decision procedures;Baader,1992
5. Unification theory;Baader,1994